28-4010
Sodium metabisulfite
≥95.0%
Synonym(s):
Sodium disulfite, Sodium pyrosulfite
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About This Item
Linear Formula:
Na2S2O5
CAS Number:
Molecular Weight:
190.11
UNSPSC Code:
12352300
PubChem Substance ID:
EC Number:
231-673-0
MDL number:
Assay:
≥95.0%
Grade:
SAJ special grade
Form:
powder
grade
SAJ special grade
assay
≥95.0%
form
powder
availability
available only in Japan
pH
4.5 (20 °C, 50 g/L)
mp
>300 °C (lit.)
SMILES string
[Na+].[Na+].[O-]S(=O)S([O-])(=O)=O
InChI
1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
InChI key
HRZFUMHJMZEROT-UHFFFAOYSA-L
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Signal Word
Danger
Hazard Codes
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Oral - Eye Dam. 1
supp_hazards
Storage Class
13 - Non Combustible Solids
WGK
WGK 1
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
dust mask type N95 (US), Eyeshields, Gloves
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